Here’s another video showing you how to take apart the Nexus 7, and how to put it back together again! Remember that opening up your tablet will invalidate your warranty, attempt at your own risk.
YouTube Repair Guide
Full credit to DirectFix.com, thanks for sharing this video on YouTube.
Personally I’ll be booking mine in for a professional repair if something goes wrong! But if you like to tinker let us know how it goes.